checkup: Add selinux context to boot script marker file

When the boot script is done, after tuned-adm is set and reboot - the
BootScriptReadinessMarkerFileFullPath file marker is set.
In order to be polled [0] by guest-agent ping in later commits, adding
the proper selinux context to this file.

[0]
https://kubevirt.io/user-guide/virtual_machines/liveness_and_readiness_probes/#defining-guest-agent-ping-probes

Signed-off-by: Ram Lavi <[email protected]>

pkg/internal/checkup/checkup.go

@@ -296,6 +296,7 @@ func generateBootScript() string {
 	sb.WriteString("fi\n")
 	sb.WriteString("\n")
 	sb.WriteString("touch " + config.BootScriptReadinessMarkerFileFullPath + "\n")
+	sb.WriteString("chcon -t virt_qemu_ga_exec_t " + config.BootScriptReadinessMarkerFileFullPath + "\n")
 
 	return sb.String()
 }